mirror of
https://github.com/holub/mame
synced 2025-04-19 15:11:37 +03:00
plugins/cheatfind: add width and endian awareness
--- Need to handled alignment
This commit is contained in:
cracyc
parent
a107408a08
commit
1132ce2870
@ -61,8 +61,45 @@ function cheatfind.startplugin()
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end
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-- compare two data blocks
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function cheat.comp(olddata, newdata, oper, val)
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function cheat.comp(olddata, newdata, oper, val, signed, width, endian)
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local ret = {}
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local format = ""
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local size = olddata.size
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if endian == 1 then
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format = format .. ">"
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else
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format = format .. "<"
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end
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if width == 16 then
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size = size & 0xfffe
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if signed == "signed" then
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format = format .. "h"
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else
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format = format .. "H"
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end
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elseif width == 32 then
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size = size & 0xfffc
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if signed == "signed" then
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format = format .. "l"
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else
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format = format .. "L"
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end
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elseif width == 64 then
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size = size & 0xfff8
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if signed == "signed" then
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format = format .. "j"
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else
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format = format .. "J"
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end
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else
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if signed == "signed" then
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format = format .. "b"
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else
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format = format .. "B"
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end
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end
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if olddata.start ~= newdata.start or olddata.size ~= newdata.size then
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return {}
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end
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@ -70,37 +107,37 @@ function cheatfind.startplugin()
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val = 0
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end
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if oper == "+" or oper == "inc" or oper == "<" or oper == "lt" then
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for i = 1, olddata.size do
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local old = string.unpack("B", olddata.block, i)
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local new = string.unpack("B", newdata.block, i)
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for i = 1, size do
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local old = string.unpack(format, olddata.block, i)
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local new = string.unpack(format, newdata.block, i)
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if old < new then
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if (val > 0 and (old + val) == new) or val == 0 then
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ret[#ret + 1] = { addr = olddata.start + i - 1,
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oldval = old,
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newval = new}
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oldval = old,
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newval = new}
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end
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end
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end
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elseif oper == "-" or oper == "dec" or oper == ">" or oper == "gt" then
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for i = 1, olddata.size do
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local old = string.unpack("B", olddata.block, i)
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local new = string.unpack("B", newdata.block, i)
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for i = 1, size do
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local old = string.unpack(format, olddata.block, i)
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local new = string.unpack(format, newdata.block, i)
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if old > new then
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if (val > 0 and (old - val) == new) or val == 0 then
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ret[#ret + 1] = { addr = olddata.start + i - 1,
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oldval = old,
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newval = new}
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oldval = old,
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newval = new}
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end
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end
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end
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elseif oper == "=" or oper == "eq" then
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for i = 1, olddata.size do
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local old = string.unpack("B", olddata.block, i)
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local new = string.unpack("B", newdata.block, i)
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for i = 1, size do
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local old = string.unpack(format, olddata.block, i)
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local new = string.unpack(format, newdata.block, i)
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if old == new then
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ret[#ret + 1] = { addr = olddata.start + i - 1,
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oldval = old,
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newval = new}
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oldval = old,
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newval = new}
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end
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end
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end
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@ -108,17 +145,18 @@ function cheatfind.startplugin()
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end
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-- compare a data block to the current state
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function cheat.compcur(olddata, oper, val)
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function cheat.compcur(olddata, oper, val, signed, width, endian)
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local newdata = cheat.save(olddata.space, olddata.start, olddata.size, olddata.space)
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return cheat.comp(olddata, newdata, oper, val)
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return cheat.comp(olddata, newdata, oper, val, signed, width, endian)
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end
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_G.cf = cheat
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local devtable = {}
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local devsel = 1
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local bitwidth = 3
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local signed = 0
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local endian = 0
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local optable = { "<", ">", "=" }
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local opsel = 1
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local value = 0
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@ -127,12 +165,16 @@ function cheatfind.startplugin()
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local matches = {}
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local matchsel = 1
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local menu_blocks = {}
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local midx = { region = 1, init = 2, width = 3, signed = 4, save = 3, op = 5, val = 6,
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lop = 7, rop = 8, comp = 9, match = 11 }
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local midx = { region = 1, init = 2, save = 3, width = 5, signed = 6, endian = 7, op = 8, val = 9,
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lop = 10, rop = 11, comp = 12, match = 14 }
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local function start()
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devtable = {}
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devsel = 1
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devsel = 1
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bitwidth = 3
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signed = 0
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endian = 0
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opsel = 1
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value = 0
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leftop = 1
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@ -165,7 +207,7 @@ function cheatfind.startplugin()
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local function menu_populate()
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local menu = {}
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local function menu_lim(val, min, max, menuitem)
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if val == min then
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menuitem[3] = "r"
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@ -183,17 +225,21 @@ function cheatfind.startplugin()
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menu_lim(devsel, 1, #devtable, menu[midx.region])
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end
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menu[midx.init] = { "Init", "", 0 }
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if not next(menu_blocks) then
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menu[midx.width] = { "Bit Width", 1 << bitwidth , 0 }
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menu_lim(bitwidth, 3, 6, menu[midx.width])
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menu[midx.signed] = { "Signed", "true", 0 }
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menu_lim(signed, 0, 1, menu[midx.signed])
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if signed == 0 then
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menu[midx.signed][2] = "false"
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end
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else
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if next(menu_blocks) then
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menu[midx.save] = { "Save current", "", 0 }
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menu[midx.save + 1] = { "---", "", "off" }
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menu[midx.width] = { "Bit Width", 1 << bitwidth , 0 }
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menu_lim(bitwidth, 3, 6, menu[midx.width])
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menu[midx.signed] = { "Signed", "false", 0 }
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menu_lim(signed, 0, 1, menu[midx.signed])
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if signed == 1 then
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menu[midx.signed][2] = "true"
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end
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menu[midx.endian] = { "Endian", "little", 0 }
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menu_lim(endian, 0, 1, menu[midx.endian])
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if endian == 1 then
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menu[midx.endian][2] = "big"
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end
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menu[midx.op] = { "Operator", optable[opsel], "" }
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menu_lim(opsel, 1, #optable, menu[midx.op])
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menu[midx.val] = { "Value", value, "" }
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@ -225,7 +271,18 @@ function cheatfind.startplugin()
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if #menu > 50 then
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break
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end
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menu[#menu + 1] = { string.format("%08x %02x %02x", match.addr, match.oldval, match.newval), "", 0 }
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local numform = ""
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if bitwidth == 4 then
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numform = " %04x"
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elseif bitwidth == 5 then
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numform = " %08x"
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elseif bitwidth == 6 then
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numform = " %016x"
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else
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numform = " %02x"
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end
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menu[#menu + 1] = { string.format("%08x" .. numform .. numform, match.addr, match.oldval,
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match.newval), "", 0 }
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end
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end
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end
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@ -247,7 +304,7 @@ function cheatfind.startplugin()
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end
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if index == midx.region then
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devsel = incdec(devsel, 1, #devtable)
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devsel = incdec(devsel, 1, #devtable)
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elseif index == midx.init then
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if event == "select" then
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menu_blocks = {{}}
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@ -258,11 +315,15 @@ function cheatfind.startplugin()
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manager:machine():popmessage("Data cleared and current state saved")
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ret = true
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end
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elseif not next(menu_blocks) then
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if index == midx.bitwidth then
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bitwidth = incdec(bitwidth, 3, 6)
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elseif index == midx.signed then
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signed = incdec(signed, 0, 1)
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elseif index == midx.init then
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if event == "select" then
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menu_blocks = {{}}
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matches = {}
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for num, region in ipairs(devtable[devsel].ram) do
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menu_blocks[1][num] = cheat.save(devtable[devsel].space, region.offset, region.size)
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end
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manager:machine():popmessage("Data cleared and current state saved")
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ret = true
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end
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elseif index == midx.save then
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if event == "select" then
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@ -273,6 +334,12 @@ function cheatfind.startplugin()
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manager:machine():popmessage("Current state saved")
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ret = true
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end
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elseif index == midx.width then
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bitwidth = incdec(bitwidth, 3, 6)
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elseif index == midx.signed then
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signed = incdec(signed, 0, 1)
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elseif index == midx.endian then
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endian = incdec(endian, 0, 1)
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elseif index == midx.op then
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if event == "up" or event == "down" or event == "comment" then
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if optable[opsel] == "<" then
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@ -296,10 +363,11 @@ function cheatfind.startplugin()
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matches = {}
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for num = 1, #menu_blocks[1] do
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if rightop == 0 then
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matches[#matches + 1] = cheat.compcur(menu_blocks[leftop][num], optable[opsel], value)
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matches[#matches + 1] = cheat.compcur(menu_blocks[leftop][num], optable[opsel], value,
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signed, 1 << bitwidth, endian)
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else
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matches[#matches + 1] = cheat.comp(menu_blocks[leftop][num], menu_blocks[rightop][num],
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optable[opsel], value)
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optable[opsel], value, signed, 1 << bitwidth, endian)
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end
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end
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ret = true
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